Apparatus for rolling metal



J. R. COE.

' APPARATUS FOR ROLLING METAL.

APPLICATION FILED JUNE 12: I920.

Pawma'se t. 12, 1922.

Suva/who's l. R. COE.

APPARATUS Fm? ROLLING METAL.

APPLICATION FILED JUNE 12, I920.

PatentdSept. 12, 1922.

2 SHEETS-SHEET 2. I

Patented Sept 12, 1922.

JAMES Bonnier 001:, or WATERBUBY, connncrrcur, Assmnoa' TO THE amnmcan BRASS COMPANY, OF WATERZBURY, CONNECTICUT, A CORPORATION. OF CONNECTI- OUT.

Application filed .Tune 12,

To all whom it may concern:

Be it known that I, JAMES R. C'OE. a citizen of the United States, residing at Waterbury, county of New Haven, State of Connecticut, have invented a certain new for the subsequent rollings. These rolls of large diameter have been found to be necessary on account of the great stresses to which they are subjected. -T.he trunnions and bearings for these rolls are all of a correspondingly large size requirin large bearin s and introducing great riction. One 0 the stresses which these rolls are required to resist is the stress which tends to result in their bending apart, and more or less of such bending is found to'be present even with rolls of large diameter, since they are supported only at their ends, while the metal between them bears against their central portions. Another reason for using such large rolls is that-it is necessary to have the adjacent surfaces on two such rolls in ordinary rolling apparatus approach each other quite gradually, since if the rolls are so small as to cause the surfaces to approach more or less abruptly, they will not bite the end of the metal so' as'to draw-it in between them. One of the objections to the large rolls with the gradually approaching surfaces is that when the metal is drawn in between them it is subjected to a swedging or rending action as distinguished from a squeezing. action, which swedgin or rending action extends for a considera 1e distance and distorts the fibers much more than a more localized compressing action would do.

' In my improved rolling apiparatus these Objections are largely avoide and the rearrana'ms r03 ROLLING METAL 1920. Serial n 888,428.

of uite diflerent texture than the product pro need by the ordinary large powerdrive'n rolls. and useful Improvement in Apparatus for A. further object of my invention is to provide a new and improved means for'permitting the metal-to be inserted between the rolls and subsequently compressin it to the desireddegree. A further objec t i of m 1IlVeI1t10Il 1s to provide an apparatus in W 1ch a product is formed which varies in to a central plane. IA further Object ofmy which,

Flg. 1 shows a side elevation of my,

apparatus with acted upon;

Flg. 2 shows a similar view in which the actlon upon the bar of metal is nearlycompleted; I

Fig. 3 shows details of a rack member of my apparatus;

a bar of metal about to be Fig. 4 shows in side elevation a track mem er of my apparatus; a

Fig. 5 shows in plan view a detail. 0 one of my rolls and connections therefrom; F g. 6 is a side elevation of the same;

Flg. 7 is an endelevation of the apparatus showing the bar to be acted upon in section on the line 77, Fig. .1;

Fig. 8 shows diagrammatically another means for causing the bar to pass between the rolls; a Fig. 9 shows stillanother such means;

Fig. 10 shows diagrammatically a modification of the apparatus of Fig. 1, whereb the extreme forward end of the bar, as we 1 as all other parts of the bar, can be reduced to a uniform thickness; V Fig. 11' shows a bar being reduced in thickness at its forward end by the apparatus of Fi 10;

Fig. 12 s ows a subsequent step in which the remainder of the bar is being reduced to the desired thickness by that apparatus;

e5 thlckness, the two faces being symmetrical.

Fig. 13 shows an arrangement in which the resultant product is tapered uniformly from one end to the other;

Fig. 14 shows such product, and

Fig. 15 shows an arrangement for periodically increasing and decreasing the thickness of the bar throughout its length.

Referring more particularly to the drawings, 1 is an abutment and 2 is a bed, which two elements are relatively'movable. Thus, the abutment 1 may be the head of a planer of which 2 is the traveling bed. Secured to the bed 2 is a massive framework consisting of top and bottom members .3, 4, which are secured together by side plates 5 bolted thereto. In longitudinal recesses contained in the top and bottom members are U-shaped members 6 and 7 secured in place, the opposing faces of the legs of the U having teeth 8 so as to constitute racks. In the central recesses in these U-shaped members are 'two relatively fixed tracks 9 and 10 secured in place. Within the'casing thus described are two juxtaposed rollers 11 and 12, having complete cylindrical rolling surfaces which travel along the tracks 9 and 10, these tracks being in line with the bodies of the rollers and engaged thereby so as to resist any outward thrust to which the rollers may be subjected when-a bar of metal 13 ispassed between them. Upon the reduced trunnions of these rollers are rigidly secured pinions 14, 14 and 15, 15, which engage the teeth 8 of the rack members 6, 7, the pitch lines being substantially in line with the laterally extending surfaces of the tracks 9 and 10 respectively. The rack faces of the portions 6 and 7 and also the face of the track 9 are curved atone end, as shown at 16 and 17 of Figs. 3 and 4 and also in Fig. 2 so as to produce a gradually opening mouth at the starting or entrance end of the frame. The trunnions of the rollers 11 and 12 are extended beyond the pinions 14 and 15, and on these extensions arelinks 18, 18 and 19, 19, in whose rear ends therollers are journaled and whose forward ends are movably connected to the abutment 1. Springs 20 located betweenopposing links of the two bars tend to separate the two pairs and hold the upper and lower gears 1.4 and 15 out of engagement with one another and in engagement with their respective tracks. In ,actuating the machine the forward end of ,a bar 13 is presented to the rolls 11 and tively to the framework and along the tracks 9, 10, which, as they approach one another,

cause the 'rollsto press upon the bar 13 so as to reduce its thickness. This movement can be caused by positively moving the abutment 1, the framework being held stationary, or by positively moving the framework, the abutment being held stationary, or it can be caused by a direct pull upon the bar by a draw head 21, as shown in Fig. 8, or a direct push by a hydraulic ram 21' as shown in Fig. 9. In the construction shown in Fig. 1, the tracks 9, 10 and the racks 6, 7 are parallel except at the mouth of the framework, so that thebar except at its extreme front end is reduced to a unlform thickness, and the links 18 and 19 hold the plane passing through the axes of the rollers at right angles to the medial line between the tracks. The faces of the tracks are symmetrical to this medial plane.

In order to reduce the front end of the bar to a similar thickness, I extend the framework to the right beyond the mouth extended portion into line with the faces of the main portions thereof as shown in Fig.

10. With this arrangement the bar is inserted between the rolls when the rolls are at the enlarged portions 16, as shown in Fig. 10, and then the rolls are first moved toward the right, whereupon the portions 22 of the track cause the rolls to approach one another and reduce the thickness of the end of the bar to the desired extent, as shown in Fig. 11. After this preliminary reduction has taken place, the rolls are restored to the position shown in Fig. 10 and moved to the left, whereupon they engage the bar so as to re duce the thickness of the remaining portion thereof as the rollers are moved to the left, as shown in Fig. 12.

By my invention a uniformly tapered product may be produced. In order to ac complish 'thlS end I locate the tracks so that their ends 23 are nearer together than the points 24. With this arrangement, when the bar is insertedas shown in Fig. 10 and made to move toward the left, the rolls compress it more and more, producing the tapered productshown in Fig. 14, the front end of the bar being the thicker and both sides of the bar being symmetrical with relation to a central plane.

If it is desired to form a bar with symmetrically located undulating sides I pro vide the tracks with undulations such as valleys 25 and crests 26, the valleys and crests being located opposite to each other respectively, as shown in Fig. 15. When the bar ispassedbetween rolls engaging tracks of this construction, the product has undulating sides which are symmetrical to a central plane. In all instances racks having their pitch lines substantially in line with the faces of the tracks at all points, such as shown in Figs. 1 to 4, are employed.

With this construction the tracks resist the stresses due to the action of the rolls upon the bar so that the rolls can be made of comparatively small size. On account of this reductionin size, the amount of surso that t tained.-

As will be evident to those skilled in the.

art, my invention permits of various modifications without departing from the spirit thereof or the scope of the appended claims.

What I claim is: I

1. In an apparatus for rolling metal, the combination of two juxtaposed rollers having rollin surfaces completely surroundinlr their b0 y portions, two relatively fixed tracks having opposin faces, said tracks engaging the body portions of said rollers so as to contact with said rolling surfaces, and means for maintaining the lane assing through the axes of said rol ers su stantially at a right angle to a plane medial to said tracks. 2;;In an apparatus for rolling metal the combination of two juxta osed rollers aving rolling surfaces comp etely surroundin their body portions, two relatively fixer tracks having opposing faces, said tracks engaging the body I ortions of said rollers so as to contact wit said rollin surfaces, igears upon the ends of said rol ers, racks xed relatively to said tracks and "with which said gears engage, the pitch lines of said gears bein approximately in line with the faces of sai tracks, and means for maintainin the plane passin of sai rollers substantia ly at a right angle to a plane medial to said tracks, said tracks and racks adjacent to the starting ends fixed relatively to said tracks thereof being separated more than at other points.

3. In an apparatus forvrolling metal, the combination of two juxta osed rollers having rolling surfaces comp their body portions, two relatively fixed tracks having 'opposing faces, said tracks engaging the body portions of said rollers so as to contact with said rolling surfaces, gears upon the ends. of. said, rollers racks and with which said gears engage, the pitch lines of said ears being approxlmately in line with the aces of said tracks, and -means' for maintainin the plane passing through the axes of sai' rollers substantially at a right angle to a plane medial to said tracks, said tracks and ra'cks at points adjacent to the starting ends thereof being separated more than at other portions and approaching each other onboth sides of said oints.

4. In an apparatus for ro ing metal the combination of two juxta osed rollers aving rolling surfaces comp etely surrounding as to contact with said rollin through the axes etely surrounding a their body portions, two relatively fixed tracks having opposed faces, said tracks engagingthe body ortions of said rollers so surfaces,

ears upon the ends of said ro lers racks xed relatively to said tracks and with which-said gears engage, the pitch lines, of said gears being approximately in line with the faces of sa1d tracks,-an abutment as to which said tracks are relatively movable, and two pairs of links connecting said rollersand said abutment and holding said rollers in said,plane at right angles to a plane medial to said tracks.

5. In an apparatus for rolling metal, the combination of tvg'a'juxtaposed rollers having rolling surfaces completely surround- 7 ing their body portions, two relatively fixed tracks having opposing faces, said tracks engagingthe body portions ,of said rollers so as to contact with said rolling surfaces, gears upon the ends of said rollers. racks fixed relatively to said tracks and with which said gears engage, the pitch lines of said gears being approximatel in line with the faces of said tracks, an a utment as to which said tracks are relatively movable, two pairs of links connecting said rollers and said abutment and holding said rollers in said plane at right angles to a plane medial to said tracks, and means tending to separate the ends of the pairs of links connected to said rollers. H

6; In an apparatus for rolling metal, the combination of two juxtaposed rollers having rolling surfaces completely surrounding their body portions, two relatively fixe tracks having opposing faces, engaging the body ortions of said rollers so as to contact wit gears upon the ends "of said rol ers, racks fixed relatively to said tracks and with which said gears'engage, the pitch lines of said ears being approximately in line with the f aces of said tracks, means for maintaining the plane passin through the axes of said rollers substantia yat a right angle to a plane medial to said tracks, and longitudinally moving means for causing said rolls to move along said track members.

7. In an apparatus for rolling metal strips,

the combination of two juxtaposed rollers havin rolling surfaces completely surrounding their body portions, two relatively fixed tracks having opposing faces, said tracks engaging the body portions of said rollers so as to contact with said rolling surfaces, gears upon the ends of said rollers,

racks fixed relatively to said tracks and with said tracks in said plane at right angles to a plane medial to said tracks, and means for causing relatively longitudinal movement between said tracks and said abutment.

8. In an apparatus for rolling metal strips, the combination of two juxtaposed rollers having rolling surfaces completely surrounding their body portions, two relatively fixed tracks having opposing faces, said tracks'engaging the @body portlons of said rollers so as to contact with said rolling surfaces, gears upon the ends of said rollers, racksfixed relatively'to said tracksv and with which said gears engage, the pitch lines of said ears being approximate y in line with the faces of said tracks, and means for maintainin the plane passin through the axes of sad rollers substantially at a right angle to a plane medial to said tracks, the distance between said tracks varying, their opposing faces being symmetrical to said medial plane.

9. In an apparatus for rolling metal strips, the combination of two'juxtaposed rollers having rolling surfaces completely surrounding their body portions, two relatively fixed tracks having opposing faces, said tracks engaging the body portions of said rollers so as to contact with said rolling surfaces, gears upon the ends of said rollers, racks fixed relatively to said tracks and with which said gears engage, the itch lines of said gears sing approximatey in mas er line with the faces of said-tracks, and means for maintainin the plane passing through the axes of said rollers substantially at a right angle to a plane med-ial to said tracks, the distance between said tracks being gradually smaller as thefinishing ends of said tracks are approached between said tracks tapers.

.10. An apparatus for rolling metal having, in combination, a pair of rollers relatively movable toward and from each other to receive the metal between them, abutment members engaging the metal engaging portions of the peripheral-"surfaces of the rollers to limit the movement of the rollers away from each other during the o eration thereof on the metal, and means or positively rotating the rollers in a direction to feed the metalbetween them.

11. An apparatus for rolling metal hav ing, in combination, a pair of rollers rela tively movable toward and from each other to receive the metal between them, tracks engaging the metal engaging portions, of

the peripheral surfaces of the rollers to limit the movement of the rollers away from each other, and means for relatively mov ing the tracks and rollers in a direction longitudinally of the tracks, and for positivelyrotating the rollers in a direction to feed the metal between them, during said relative movement of the rollers and tracks.

JAMES ROBERT CUE,

so that the space 

